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VOLTAWELD V-8018-B1
AWS Specification: E8018-B1
JIS Specification: NONE
Other Specification:

Applications

Welding of 0.5% Cr-0.5% Mo steel used for high temperature and high pressure boilers, chemical and oil refining industries.

Characteristics

N-8018-B1 is a low hydrogen type electrode for all-position welding, which provides the weld metal 0.5% Cr-0.5% Mo.

The crack is resistibility of the weld metal is excellent.

Notes on usage

(1)      Dry the electrodes at 325-375ºC for about one hour before use.

(2)      Preheat at 150-250ºC and postheat at 620-680ºC.

(3)      Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.

Typical Chemical Composition of Weld Metal (%):

C

Si

Mn

Cr

Mo

0.07

0.51

0.81

0.51

0.49

Typical Mechanical Properties of Weld Metal:

Yield Point

N/mm2 (Kgf/mm2)

Tensile Strength

N/mm2 (Ksi)

Elongation

(%)

PWHT

590 (86)

650 (94)

31

690 degrees C x 2 hr

Size and Recommended Current Range (AC/DC+):

Diameter (mm)

2.5

3.2

4.0

5.0

Length (mm)

350

350

400

400

Ampere

Flat

60-90

90-130

140-180

140-180

V & OH

60-90

80-110

110-150

110-150

Welding Positions:

ALL POSITIONS

Packing:

20 Kg corrugated box, with 4 units of 5 Kg shrinked plastic wrapped paper boxes inside.

Special requests on packing are accepted.

 

 

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